2026-06-08T14:41:09Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1347092026-04-14T00:02:51Zcom_20.500.14352_14col_20.500.14352_15

Detailed structure of Sn 131 populated in the β decay of isomerically purified 131 in states Benito García, Jaime Fraile Prieto, Luis Mario Galve Lahoz, Pablo Ibáñez García, Paula Beatriz Illana Sisón, Andrés López Montes, Alejandro Rodríguez Murias, Javier Olaizola Mampaso, Bruno Sánchez Parcerisa, Daniel Sánchez Tembleque Verbo, Víctor Udías Moinelo, José Manuel Vedia Fernández, María Victoria Villa Abaunza, Amaia Artículo firmado por 92 autores. IDS and IGISOL Collaboration. UMO-2015/18/E/ST2/00217, UMO-2015/18/M/ST2/00523, UMO-2019/33/N/ST2/03023, 2021/WK/07, CERN/ISOLDE The excited structure of the single-hole nucleus Sn131 populated by the β- decay of In131 was investigated in detail at the ISOLDE facility at CERN. This new experiment took advantage of isomeric purification capabilities provided by resonant ionization, making it possible to independently study the decay of each isomer for the first time. The position of the first-excited νh11/2 neutron-hole state was confirmed via an independent mass spectroscopy experiment performed at the Ion Guide Isotope Separator On-Line facility at the University of Jyväskylä. The level scheme of Sn131 was notably expanded with the addition of 31 new γ-ray transitions and 22 new excited levels. The γ-emitting excited levels above the neutron separation energy in Sn131 were investigated, revealing a large number of states, which in some cases decay by transitions to other neutron-unbound states. Our analysis showed the dependence between the population of these states in Sn131 and the β-decaying In131 state feeding them. Profiting from the isomer selectivity, it was possible to estimate the direct β feeding to the 3/2+ ground and 11/2- isomeric states, disentangling the contributions from the three indium parent states. This made possible to resolve the discrepancies in logft for first-forbidden transitions observed in previous studies, and to determine the β-delayed neutron decay probability (Pn) values of each indium isomers independently. The first measurement of subnanosecond lifetimes in Sn131 was performed in this work. A short T1/2=18(4)-ps value was measured for the 1/2+ neutron single-hole 332-keV state, which indicates an enhanced l-forbidden M1 behavior for the ν3s1/2-1→ν3d3/2-1 transition. The measured half-lives of high-energy states populated in the β decay of the (21/2+) second isomeric state (In131m2) provided valuable information on transition rates, supporting the interpretation of these levels as core-excited states analogous to those observed in the doubly-magic Sn132. 2026-04-13T18:21:11Z 2026-04-13T18:21:11Z 2024-07-26 journal article Benito, J., Fraile, L. M., Korgul, A., Piersa-Siłkowska, M., Jaries, A., Stryjczyk, M., ... & IDS and IGISOL Collaboration. (2024). Detailed structure of Sn 131 populated in the β decay of isomerically purified in 131 states. Physical Review C, 110(1), 014328. 2469-9985 10.1103/physrevc.110.014328 https://hdl.handle.net/20.500.14352/134709 2469-9993 https://dx.doi.org/10.1103/physrevc.110.014328 https://journals.aps.org/prc/abstract/10.1103/PhysRevC.110.014328 eng info:eu-repo/grantAgreement/EC/H2020/654002/EU info:eu-repo/grantAgreement/EC/H2020/771036/EU info:eu-repo/grantAgreement/EC/H2020/861198/EU info:eu-repo/grantAgreement/EC/HE/101057511/EU/ info:eu-repo/grantAgreement/MINECO//FPA2015-64969-P/ES/ESTUDIOS EXPERIMENTALES DE LA ESTRUCTURA NUCLEAR EXOTICA/ info:eu-repo/grantAgreement/MINECO//FPA2015-65035-P/ES/DISPOSITIVOS AVANZADOS DE COINCIDENCIAS ULTRARRAPIDAS PARA ESTRUCTURA NUCLEAR Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2017-87568-P/ES/HIFI, UN ESPECTROMETRO PARA ESTUDIO DE REACCIONES NUCLEARES EN HIE-ISOLDE/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098868-B-I00/ES/CENTELLEADORES RAPIDOS PARA ESTRUCTURA NUCLEAR Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-126998OB-I00/ES/ESTRUCTURA NUCLEAR Y APLICACIONES CON CENTELLEADORES RAPIDOS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-122711NB-C21/ES/CAOS HAMILTONIANO Y SISTEMAS COMPLEJOS. MODELOS Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-140162NB-I00/ES/ESTUDIOS EXPERIMENTALES DE NUCLEOS EXOTICOS/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2022-136992NB-I00/ES/ESTUDIOS TEORICOS SOBRE ESTRUCTURA Y REACCIONES DE NUCLEOS EXOTICOS/ 910059 295207 306980 327629 354589 354968 CERN/FIS-NUC/0004/2015 05P18PKCIA 05P21PKCI1 PN 23 21 01 02 ST/P004598/1 ST/V001027/1 GOA/2015/010 http://creativecommons.org/licenses/by/4.0/ open access Attribution 4.0 International American Physical Society